(
	delete node db:open("SanFrancisco","historyResults.xml")//history,
	delete node db:open("Exp2","historyResults.xml")//history,
	delete node doc("xp")//globalRanking//xp,
	let $db := doc('xp') return delete node ($db//globalResults/resultsByXp, $db//globalResults/resultsByInscription),
	delete node doc("xp")/ranking/rankings/inscriptionRanking/users,
	delete node doc("xp")/ranking/rankings/notationRanking//xp
)